Radio Frequency Technology Research Articles

Direct observation of nanometer size hydride precipitations in superconducting niobium.

Superconducting niobium serves as a key enabling material for superconducting radio frequency (SRF) technology as well as quantum computing devices. Niobium has a high propensity for the uptake of hydrogen. At room temperature, hydrogen commonly occupies tetragonal sites in the Nb lattice as the metal (M)-gas (H) phase. When the temperature is decreased, however, a solid solution of Nb-H begins to precipitate. In this study, we show the first identified topographical features associated with nanometer-size hydride phase (Nb1-xHx) precipitates on the surface of the metallic superconducting niobium using cryogenic-atomic force microscopy (AFM). Further, high energy grazing incidence X-ray diffraction reveals information regarding the structure and stoichiometry of these precipitates. Finally, through time-of-flight secondary ion mass spectroscopy (ToF-SIMS), we locate atomic hydrogen sources near the top surface. This systematic study clarifies nanometer scale hydrides precipitated on the surface of the SRF Nb cavity that exhibit performance degradation at a high accelerating field regime.

Ultrasound and Helium Plasma-Assisted Liposuction for Body Contouring: A Single-Retrospective Cohort Study of 639 Patients.

Over the past two decades, liposuction techniques have significantly evolved, moving from basic fat removal to sophisticated methods aimed at improving safety, efficiency, and cosmetic outcomes. This study evaluates the efficacy and safety of a combined approach using ultrasound-assisted liposuction (UAL) and helium plasma radiofrequency (HPRF) technology to enhance skin tightening without the need for extensive surgical interventions. We conducted a retrospective analysis of 639 patients who underwent the combined UAL and HPRF liposuction technique. The patient cohort had an average age of 31.5 years and a mean BMI of 27.9 kg/m2. The procedure predominantly targeted the abdomen, with an average of 2.4 body areas treated per patient. Surgical duration averaged 118 minutes, with a mean aspirate volume of 1698 mL. Minimal residual skin laxity was observed in 87% of patients, and 91% achieved excellent improvement in body contouring. The complication rates were low, with minor occurrences of seroma (5.6%) and a very low incidence of infection (0.3%). This combined technique demonstrated safety and efficacy, providing significant skin tightening and reducing recovery time compared to more invasive procedures. The combined use of UAL and HPRF technology offers a safe and effective method for enhancing skin tightening and improving body contouring outcomes. Despite the promising results, this study acknowledges the limitations of its retrospective design. Future prospective, multicenter studies are recommended to further validate these findings. This technique represents a significant advancement in the field of cosmetic surgery, emphasizing minimally invasive solutions with substantial esthetic benefits. This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Radio frequency plus heat for in-shell egg pasteurization

Less than 3 % of the eggs in the United States are sold pasteurized because of the long thermal process (~ 60 min). However, this represents a food safety risk because of the possible presence of Salmonella spp. inside the egg. This research studied the inactivation of S. typhimurium in in-shell eggs using the novel technology radio frequency (RF) to enhance their food safety, evaluating quality, presence of sub-lethally injured cells (SICs), and cell recovery (7 °C). Eggs were inoculated inside with S. typhimurium (105 CFU/egg) and processed with RF (40.68 MHz, 35 W, 4.5 min) followed by hot water spray (H, 56.7 °C, 20 min). The studied quality attributes were yolk color, Haugh unit, yolk index, shell breakage strength, yolk and albumen pH, and albumen degradation. ANOVA one–way was used to find significant differences (α = 0.05). RF plus heat can pasteurize the eggs after 24.5 min (5-log reduction). No SICs were detected in any of the samples, and cells did not recover after five days of storage (Limit of detection <1 log CFU/g). Most quality attributes were like the control eggs. Albumen degradation showed a significant difference (p < 0.05) after processing. RF represents a potential option to ensure the safety of in-shell eggs, preserving their quality. Industry relevanceMost in-shell eggs are sold unpasteurized worldwide with the potential risk of Salmonella spp. The conventional pasteurization process is a lengthy intervention that adds cost to the product and can damage the quality of eggs. Radio frequency plus heat pasteurization offers an alternative to pasteurizing in-shell eggs with a volumetric heating process that inactivates Salmonella cells inside the eggs and has minor effects on the quality of eggs. This technology is a novel option for the egg industry, providing high-quality and reasonably priced safe eggs.

Wireless transmission of audio signals and temperature data using an optoelectronic system.

This work presents an optoelectronic instrument designed for wireless visible light communication (WVLC) systems, operating within a wavelength range of 380-750nm and compatible with standard radio frequency (RF) communication. The instrument encompasses two distinct architectures. The first enables the transmission and reception of RF-processed audio signals through a three-stage process involving RF signal transmission via Bluetooth, signal multiplexing using acousto-optic modulation, a sinusoidal grating, a PIN photodetector array, and final audio playback. The second architecture focuses on the wireless transmission and reception of temperature data, utilizing a similar three-stage approach that includes temperature data measurements with an LM35 sensor, signal processing with Arduino UNO microcontrollers, and information transmission via Bluetooth. Experimental results for both architectures validate the effectiveness of this optoelectronic instrument, demonstrating its capability to integrate RF and WVLC technologies.

Growth of single crystalline GeSn alloy epilayer on Gd2O3/Si (111) engineered insulating substrate using RF sputtering and solid phase epitaxy

The article showcases a low-cost, low-temperature deposition andHVMtechnique to develop single crystalline GeSn alloy epilayers on Gd2O3/Si (111) substrate. First, GeSn alloy amorphous layer is deposited on the insulating substrates using an Radio Frequency (RF) sputtering apparatus. Subsequently, an inductively coupled plasma-assisted chemical vapor deposition (ICP-CVD) process is used to deposit a SiO2 capping layer to protect against Sn out-diffusion during heat treatment. The samples are then subjected to solid phase epitaxy (SPE) at 450 °C, 550 °C, and 650 °C. Sample processed for SPE at 450 °C has weak crystallinity and only shows Type-A stacking. Those processed for SPE at 550 °C and 650 °C, on the other hand, have revealed formation of the single-crystalline GeSn alloy epilayer with Type-A and Type-B stacking. However, SPE at 650 °C revealed tin out-diffusion and segregation effects. This work is significant for enabling the preparation of high-Sn-content GeSn alloy epilayers on insulating Gd2O3/Si (111) substrates, as it requires the initial deposition of a GeSn amorphous alloy epilayer using RF sputtering. This advancement promises benefits which includes advantages such as lower operating voltage, reduced leakage current, and minimized parasitic and short-channel effects, making it ideal for advancing RF technology.

Radiofrequency Improves Facial Fine Lines by Thermal Effect: Damage or Just Stimulation?

Radiofrequency (RF) has been widely used for rejuvenation treatments, but without knowledge of the effective temperature of the target tissues or guidance on treatment parameters, it often leads to adverse reactions and pain. The aim of this study was to demonstrate that thermal stimulation can produce facial rejuvenation effects and to determine the optimal bipolar RF treatment parameters for treating facial fine lines. A bipolar RF device combined with CORE Technology was used in this study. Exvivo studies were conducted on both miniature swine and human skin, utilizing thermographic thermometry and histological analysis. Invivo swine studies were conducted using histological analysis and electron microscopy. A clinical trial was conducted, and the results were evaluated using the Alexiades Comprehensive Grading Scale (ACGS) and Global Aesthetic Improvement Scale (GAIS) scales. The bipolar RF technology can produce a significant effect by thermally stimulating collagen within just 2 weeks without causing thermal damage. A clinical trial involving 46 patients showed a noticeable rejuvenating effect of the bipolar RF device, especially on fine wrinkles. This study confirmed that thermal stimulation, rather than thermal damage, is sufficient to achieve rejuvenation effects. The study also found a range of bipolar RF treatment parameters that are both safe and effective for facial fine lines.

Evaluation of the efficacy of the combination of high intensity electromagnetic field and radiofrequency in promoting lipolysis

Introduction: The organization of skeletal muscle is complex, structured in distinct layers. This organization allows skeletal muscles to respond to electrical stimuli with precise and coordinated contractions. Muscle contraction occurs through responses to electrical stimuli sent by the brain to the motor neurons in the muscle fiber, these stimuli can also be induced by technologies, one of which is the high intensity electromagnetic field, also known as the HIFEM current, leading to contractions considered to be supramaximal that cannot be achieved with normal contraction, resulting in muscle hypertrophy. Objective: This study aims to analyze the results of the combination of these technologies to reduce adipose tissue. Methods: This is a clinical, observational, cross-sectional study investigating the effectiveness of the combination of high-intensity electromagnetic field and radiofrequency technologies. The sample consisted of 6 volunteers. Conclusion: It is concluded that the combination of muscle contraction and radiofrequency technologies represents an innovative approach to fat burning, combining the efficiency of lipolysis promoted by muscle energy demand with the thermal effect of radiofrequency, reducing the thickness of the fat layer by 19.53%.

Application of Medical Implants for Public Health Monitoring and Treatment

The World Health Organisation (WHO) reports that diabetes affects roughly 180 million people worldwide and that cardiovascular illnesses account for nearly 30% of all fatalities worldwide. Applications involving radio frequency (RF) or microwave technology are crucial to medical diagnosis and illness prevention. The most recent developments in the field of implantable medical devices (IMDs), such as biomedical telemetry, allow biosignals to be monitored remotely via wireless communication technology. Providing correct information to the external monitoring station is the primary function of the health maintenance monitoring scheme. Because wireless communication lessens the invasiveness of electromagnetic (EM) medical equipment, it is extremely helpful in improving patient comfort during treatment. The first swallowable pills with sensing capabilities and the introduction of pacemakers in the early 1960s both demonstrated the significance of implantable medical devices (IMDs), which enable disease monitoring and therapy. Using IMDs with wireless connection has allowed for the monitoring of both system performance and patient status. IMDs have been widely employed in healthcare systems to gather real-time signals from biosensors or preprocessed physiological bio-signals for early disease identification, improving treatment quality and promoting healthy living.

A wireless, battery-free microneedle patch with light-cured swellable hydrogel for minimally-invasive glucose detection

The escalating global prevalence of diabetes necessitates the development of advanced diagnostic methodologies that are both minimally invasive and devoid of discomfort. This study introduces a wireless battery-free passive microneedle patch with CMC-pHEA GelMA-GOx (CMC: sodium carboxymethyl cellulose; pHEA: polyethylene glycol diacrylate, 2-hydroxyethyl acrylate; GelMA: gelatin methacryloyl; GOx: glucose oxidase) light-cured swellable hydrogel for minimally-invasive glucose detection. The core of this technology combines microneedle with Radio-Frequency (RF) coupling detection, achieving extraction capacity; the microneedle lies in the use of composite hydrogel composed of a freeze-dried CMC-pHEA nanogel and GelMA-GOx, specifically fabricated to be selectively glucose-responsive through cross-linking with glucose oxidase. Upon exposure to interstitial fluid, the hydrogel microneedles swell in proportion to the glucose concentration, enabling glucose binding and facilitating the detection process. A flexible antenna, which is integral to the microneedle substrate as a passive sensing component, detects changes in the swelling of the hydrogel; these are reflected in the RF parameters (frequency, magnitude) variations, which are directly correlated with glucose levels. Furthermore, the results are near field wirelessly detected through a readout coil, simplifying sensing patch configurations. This method not only integrates the glucose monitoring process by combining extraction and detection into a single step but also enhances patient comfort. The platform’s sensitivity, specificity, and minimal invasiveness make it a promising tool for diabetes management and continuous glucose monitoring. By demonstrating the successful application of RF technology in wireless sensing applications, this study paves the way for advanced, user-friendly glucose monitoring solutions.

Intelligent resource allocation in hybrid RF/LiFi networks via deep deterministic policy gradient based DRL mechanism

A hybrid radio frequency (RF) and light fidelity (LiFi) network combines the strengths of RF and LiFi technologies. RF offers broad coverage, while LiFi provides high data rates. As these technologies operate on non-interfering spectra, they can co-exist without interfering with each other. This setup not only boosts data rate but also makes the network more reliable, especially when physical obstacles might block signals. However, resource management in hybrid RF/LiFi networks is challenging because of the dynamic environment and the different characteristics of the two technologies. Efficient resource allocation maximizes the data rate in these networks. In this paper, we introduce a model-free deep reinforcement learning (DRL) approach to solve the resource allocation problem in hybrid RF/LiFi networks. Our DRL model is designed to handle real-world conditions, considering factors like blockages and user mobility. Unlike traditional methods that need extensive modeling and assumptions, our approach learns directly from interacting with the environment, making it highly adaptable and robust. Through simulations, it is observed that our method improves resource utilization and overall network performance, achieving a 62.8% increase in sum rate and a 42.8% improvement in optimal transmit power compared to conventional methods.

Acute procedural safety of the latest radiofrequency ablation catheters in atrial fibrillation ablation: Data from a large prospective ablation registry.

Safety data of the latest radiofrequency (RF) technologies during atrial fibrillation (AF) ablation in real-world clinical practice are limited. We sought to evaluate the acute procedural safety of the four latest ablation catheters commonly used for AF ablation. A total of 3957 AF ablation procedures performed between January 2022 and December 2023 at 20 centers with either the THERMOCOOL SMARTTOUCH SF (STSF), TactiCath (TC), QDOT Micro (QDM), or TactiFlex (TF) were retrospectively analyzed. In total, QDM, STSF, TF, and TC were used in 343 (8.7%), 1793 (45.3%), 1121 (28.4%), and 700(17.7%) procedures. Among 2406 index procedures, electrical pulmonary vein isolations were successfully achieved in 99.5%. Despite similar total procedure times in the four groups, the total fluoroscopic time was significantly shorter for QDM/STSF with CARTO than TF/TC with EnSite (18.7 ± 14 vs. 27.6 ± 20.6 min, p < .001) and longest in the TF group. The incidence of cardiac tamponade was 0.7% (0.5% and 0.9% during index and redo procedures, 0.8% and 0.3% for paroxysmal and non-paroxysmal AF) and was significantly lower for QDM/STSF than TF/TC (0.2% vs. 1.1%, p = .008) and highest in the TF group. The incidence of cardiac tamponade was higher for TF than TC and STSF than QDM. In the multivariate analysis, TF/TC with EnSite was a significant independent predictor of cardiac tamponade during both the index (odds ratio [OR] = 4.8, 95% confidence interval [CI] = 1.3-17.5, p = .02) and all procedures (OR = 3.0, 95% CI = 1.3-7.2, p = .01). The incidence of cardiac tamponade and the fluoroscopic time during AF ablation significantly differed among the latest RF catheters and mapping systems in real-world clinical practice.

A Low-complex OFDM based DCO-OTFS modulation for VLC systems

Visible Light Communication (VLC) has emerged as a promising alternative for indoor and vehicular wireless communication, offering several advantages over traditional radio frequency (RF) technology. With the adoption of optical-orthogonal frequency division multiplexing (O-OFDM) schemes, visible light communication (VLC) has become more robust and adaptable in indoor, outdoor, vehicular, and underwear communications. Recently, an orthogonal time frequency space (OTFS) modulation technique has evolved with better performance than OFDM. The recent finding in the context of VLC shows that the OTFS technique shows remarkable advantages over conventional OFDM techniques except for the modem design complexity. This work introduces a low-complexity direct current-biased optical OTFS (DCO-OTFS) modulation based on OFDM. This paper evaluates the proposed system’s performance through simulations, providing evidence of its bit-error-rate (BER), peak-to-average power ratio (PAPR), and complexity behavior. Comparative assessments against the DCO-OFDM system are presented to understand the advantages of the low-complex DCO-OTFS system. The findings reveal that the proposed system not only provides low computational complexity in modem design but also maintains superior error performance, with a notable 10 dB signal-to-noise ratio (SNR) gain over DCO-OFDM along with a superior PAPR, making it a commendable choice for VLC applications.

RF technology in wireless communications:From transceiver architecture to subsystem specifications

Radiofrequency (RF) technology is essential to wireless communication.The demand for RF technology research is growing as mobile, satellite, radar, and other fields advance. In recent years, the development of 5G and 6G technologies has raised the bar for in-depth RF technology research, requiring greater frequency and data transmission efficiency, among other things. In addition to providing a brief overview of the transceiver's components, the signal chain, and an introduction to the major RF technologies, this paper will concentrate on the architecture of RF transceivers in RF systems and the specification of sub-systems. It will also include references for the RF sub-system specifications and integration techniques. The comprehensive study of communication technology will benefit greatly from an in-depth grasp of the transceiver's capabilities. Lastly, an overview of the layout and features of RF transceivers is provided, along with a prediction of the future application-focused path of RF technology.

Effect of hot air-assisted radio frequency rotation heating system on improving heating uniformity of dried black fungus (Auricularia auricula)

A large-capacity radio frequency (RF) rotation heating system was employed in this study to heat dried black fungus, and hot air was used for assistance treatment. The effects of electrode gap, rotation rate and hot air on the uniformity of RF heating of dried black fungus were explored. The optimal heating process parameters were obtained, and the sterilization effect was validated. The results showed that the rotation system could significantly enhance the RF heating uniformity of black fungus (P > 0.05). The optimal heating process for heating a large-capacity (480 g) black fungus was to utilize RF heating assisted by 70 °C hot air with an electrode gap of 175 mm and a rotation rate of 60 rpm, followed by 30 min of heat preservation at 70 °C hot air with a rotation rate of 40 rpm. After the entire sterilization treatment, the heating uniformity index λ of black fungus was reduced to 0.027 ± 0.004, the total plate count decreased by 3 log CFU/g, and the moisture content dropped to below 13 %. The ideal RF heating uniformity and sterilization effect of black fungus were obtained in this study through the simultaneous use of hot air and rotation, providing a theoretical foundation for the application of RF technology in the processing of black fungus.

Advancements in Face and Neck Contouring: Integrating Radiofrequency-Assisted Liposuction with FaceTite and Buccal Fat Pad Excision for Facial Slimming.

The integration of neck liposuction with FaceTite Manipulus Radiofrequency (RF) technology and buccal fat pad excision for enhanced neck rejuvenation promise heightened precision and efficacy in sculpting the neck and jawline. Neck liposuction, coupled with RF technology, provides controlled thermal energy for adipose tissue treatment and collagen remodeling, while buccal fat pad excision offers refined contouring of the lower face and neck. This integrated approach aims to optimize patient outcomes and advance the field of esthetic plastic surgery. A prospective study was conducted from 2016 to 2023 on 80 consecutive patients who presented to the author's private clinic and required neck remodeling surgery for esthetic purposes. Patients were monitored and clinic appointments were scheduled at intervals of 0, 1, 3, 6 and 12 months post-treatment for evaluation. A tape measure recorded submental length at 1 and 6 months, and a satisfaction survey was administered one week before surgery and after six months. Physicians assessed improvement using a five-point scale for patient satisfaction and a four-point scale for overall improvement. All patients underwent successful RFAL treatment, consistently achieving satisfaction with the outcomes. The average reduction in submental length measured 23 mm during the 6-month follow-up period. Additionally, the removal of buccal fat pads played a pivotal role in facial slimming and enhancing the esthetics of the upper cheek region. The integration of neck liposuction with FaceTite RF technology and buccal fat pad excision offers a promising approach for enhanced neck rejuvenation and facial contouring. This combined method demonstrates heightened precision and efficacy in sculpting the neck and jawline, aiming to optimize patient outcomes and advance the field of esthetic plastic surgery. This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Efficacy and safety of a novel monopolar radiofrequency device with a continuous water-cooling system in patients with age-related facial volume loss

Background Esthetic radiofrequency (RF) technology has much attracted public attention with the increasing demand for skin rejuvenation. A continuous water cooling-based monopolar RF (MRF) device was designed for the first time to protect the epidermis and maximize clinical outcomes. Objective Assess the efficacy and safety of the proposed MRF device in patients with mild-to-moderate sunken cheeks and jawline laxity. Methods Twenty-one patients underwent a single session of MRF treatment. Quantitative analysis was performed using a 3D imaging technique. Postprocedural clinical improvements were assessed with the Merz Scale. Regarding safety, adverse events (AEs), thermal sensation (TS) and pain intensity were explored. Patient satisfaction was surveyed with the Self-Assessment Questionnaire (SAQ). Results The follow-up investigation demonstrated that facial volume increased across the cheek and jawline, with lifting effects throughout the treatment area. The Merz Scale assessment revealed that sunken cheeks, sagging jawlines and wrinkles were markedly improved. In addition, there were transient AEs, mild TS and moderate pain. In SAQ, 81% patients were satisfied with the procedure. Conclusions This study provided quantitative evidence for postprocedural volumetric increases along with enhanced lifting effects, strongly implying that the proposed MRF device can be an attractive option for improving facial skin volume loss and laxity.

Intelligent Traffic Signal Management with PLC

This study introduces a Smart Traffic Light Control System (STLCS) that uses advanced technologies to improve traffic regulation. The key components include a camera-based traffic density detection module and a specialized vehicle identification system using Radio Frequency (RF) technology. The system’s core is an Arduino Uno board along with several converters and a Programmable Logic Controller (PLC). Field tests show that STLCS effectively analyses traffic density and prioritizes emergency vehicles, proving its potential for global traffic management improvements

A comprehensive investigation on industrial radio frequency (RF) drying: Modeling and optimization strategies for carrot slice processing

Radiofrequency (RF) drying is a revolutionary technique gaining prominence in the food industry. The present study delves into the drying of carrot slices within industrial settings, employing cutting-edge RF technology. The entire drying operation was optimized using response surface methodology, and the effect of process parameters on the physico-chemical properties of carrot slices was noted. Optimized process parameters were found to be at the initial moisture content of 89.86% with an electrode distance of 210 mm and a thickness of carrot slice at 4.75 mm. Page model was found to be most suitable as it explains most of the variations in the moisture ratio. High moisture diffusivity was noted for RF-treated samples which indicates faster drying rates. This project on optimizing and modeling carrot slice drying in industrial RF systems holds immense industrial relevance, promising increased efficiency, improved product quality, and sustainable practices in vegetable processing.

Functional characteristics and storage stability of hot air assisted radio frequency treated pearl millet

Nutricereals, pearl millet flour consumption is hardly limited to a few specific regions of the world owing to the development of early rancidity on storage. Hot air assisted radio frequency technology (HARF) was used to improve the storage stability of pearl millet flour. Pearl millets at different moisture levels of 10.5±0.5, 12 & 15% were subjected to HARF for 5-, 10- & 15-min exposure period under fixed electrode position. The results revealed that significant reduction in peroxide value and free fatty acid values of flours from treated pearl millet was found compared to decorticated raw flour; thereby, the storage stability enhancement of pearl millet flour up to 180 days was achieved. No significant difference was found for emulsifying, foaming and cooking properties between treated pearl millet at 15% moisture, 15 min exposure and decorticated raw one. In contrast, the bulk density of flour from treated pearl millet was found higher. Significant increase in hardness of cooked grains after the treatment was observed while the springiness, cohesiveness and gumminess values did not vary. In FTIR analysis, no difference was observed between the peaks of whole and decorticated pearl millet flours in both untreated and treated samples.Graphical

Advancing Wireless Strain Sensing with Low-cost Printable Supersensitive Radiofrequency Patches

Engineering structures experience changes in material and functional properties due to structural damage, induced by sudden events or gradual degradation over time. Structural Health Monitoring (SHM) is crucial, utilizing real-time monitoring systems with various sensors. Suitable sensors for monitoring structures are vital for future economies. They should feature sensitivity, cost-effectiveness, easy integration, and reduced complexity. Current strain sensors, like strain gauges and Fiber-optic Brag Gratings (FBG), are sensitive but have drawbacks, including wiring complexities, installation time, and limited lifetimes. Introducing wireless sensors as a solution, enables autonomous strain monitoring, overcoming the drawbacks of traditional wired sensors. Chipless Radio Frequency (RF) technology, specifically passive RF sensors, stands out for smart structure development. These sensors, relying on RF readers for power, offer compactness, non-intrusiveness, longer lifetimes, and cost-effectiveness, making them promising for monitoring large structures. This research aims to develop an innovative chipless RF strain sensor for wireless communication, emphasizing enhanced sensitivity and seamless integration into real structures for integrity monitoring. First, the structure and processing technique of such sensors will be presented. Second, an external readout coil connected to a vector network analyzer was used to make electromagnetic coupling with the receiver coil in the sensor and resonate the sensor on its resonant frequency. When experiencing strain, the signal activates a transmission line mechanism, increasing the attenuation along the capacitive element. The consequence is a strong variation in the effective sensor length making a remarkable variation in the resonant frequency. We demonstrate the exceptional gauge factor in the resonant frequency at different strain levels, which gives our sensor a big advantage, compared to pure resistive sensors and geometrically related capacitive sensors. We also demonstrate that such sensors can be fabricated in large quantities at very low cost as they are by design compatible with classical printing technologies.